package com.njd.meitu.tv.main;

import com.njd.meitu.tv.R;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.webkit.JsPromptResult;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar; 
import android.annotation.SuppressLint;
import android.graphics.Bitmap; 

public class WebviewActivity extends FragmentActivity {
	private WebView mWebView = null;
	private ProgressBar mProgressBar = null;
	
	@SuppressLint("SetJavaScriptEnabled")
	@Override
	protected void onCreate(Bundle savedInstanceState) {		
		super.onCreate(savedInstanceState);
		
		setContentView(R.layout.web);
		
		mWebView = (WebView)findViewById(R.id.webView);
		mProgressBar = (ProgressBar)findViewById(R.id.progress_bar);
		
		WebSettings webSettings = mWebView.getSettings();
		webSettings.setJavaScriptEnabled(true);
		// 设置可以访问文件
		webSettings.setAllowFileAccess(true);
		// 设置可以支持缩放
		webSettings.setSupportZoom(true);
		// 设置默认缩放方式尺寸是far
		webSettings.setDefaultZoom(WebSettings.ZoomDensity.MEDIUM);
		// 设置出现缩放工具
		webSettings.setBuiltInZoomControls(false);
		webSettings.setDefaultFontSize(20);

		// 访问assets目录下的文件
		String url = "http://meitu.tv";
		mWebView.loadUrl(url);

		// 设置WebViewClient
		mWebView.setWebViewClient(new WebViewClient() {
			// url拦截
			@Override
			public boolean shouldOverrideUrlLoading(WebView view, String url) {
				// 使用自己的WebView组件来响应Url加载事件，而不是使用默认浏览器器加载页面
				view.loadUrl(url);
				// 相应完成返回true
				return true;
				// return super.shouldOverrideUrlLoading(view, url);
			}

			// 页面开始加载
			@Override
			public void onPageStarted(WebView view, String url, Bitmap favicon) {
				mProgressBar.setVisibility(View.VISIBLE);
				super.onPageStarted(view, url, favicon);
			}

			// 页面加载完成
			@Override
			public void onPageFinished(WebView view, String url) {
				mProgressBar.setVisibility(View.GONE);
				super.onPageFinished(view, url);
			}

			// WebView加载的所有资源url
			@Override
			public void onLoadResource(WebView view, String url) {
				super.onLoadResource(view, url);
			}

			@Override
			public void onReceivedError(WebView view, int errorCode,
					String description, String failingUrl) {
				super.onReceivedError(view, errorCode, description, failingUrl);
			}

		});

		// 设置WebChromeClient
		mWebView.setWebChromeClient(new WebChromeClient() {
			@Override
			// 处理javascript中的alert
			public boolean onJsAlert(WebView view, String url, String message,
					final JsResult result) {
				return super.onJsAlert(view, url, message, result);
			};

			@Override
			// 处理javascript中的confirm
			public boolean onJsConfirm(WebView view, String url,
					String message, final JsResult result) {
				return super.onJsConfirm(view, url, message, result);
			};

			@Override
			// 处理javascript中的prompt
			public boolean onJsPrompt(WebView view, String url, String message,
					String defaultValue, final JsPromptResult result) {
				return super.onJsPrompt(view, url, message, defaultValue,
						result);
			};

			// 设置网页加载的进度条
			@Override
			public void onProgressChanged(WebView view, int newProgress) {
				mProgressBar.setProgress(newProgress);
				super.onProgressChanged(view, newProgress);
			}

			// 设置程序的Title
			@Override
			public void onReceivedTitle(WebView view, String title) {
				super.onReceivedTitle(view, title);
			}
		});
	}
}
